Finding the Third Proportional to 90,985.50 and 210,096

Step by Step Solution

1. Step 1: Write the proportion equation
   90,985.50 : 210,096 = 210,096 : x
2. Step 2: Convert to fraction form
   90,985.50/210,096 = 210,096/x
3. Step 3: Cross multiply
   90,985.50x = 210,096 × 210,096
4. Step 4: Simplify right side
   90,985.50x = 44,140,329,216
5. Step 5: Solve for x
   x = 44,140,329,216/90,985.50
6. Step 6: Final answer
   x = 485,135.86